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3 years ago

Quanto é 1 dividido por 20?

Mathematics

2 answers:

Tanzania [10]3 years ago

5 0

Creo que todavía son 20, ¿no?

timurjin [86]3 years ago

3 0

20...…………………………………………………………..

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2/(a-7)(a+2)=4/(a+3)(a+2)

pochemuha

$\frac{2}{(a - 7)(a + 2)} = \frac{4}{(a + 3)(a + 2)}$

$\frac{2}{(a^{2} + 2a - 7a - 14)} = \frac{4}{(a^{2} + 2a + 3a + 6)}$

$\frac{2}{a^{2} - 5a - 14} = \frac{4}{a^{2} + 5a + 6}$

$2(a^{2} + 5a + 6) = 4(a^{2} - 5a - 14)$
$2(a^{2}) + 2(5a) + 2(6) = 4(a^{2}) - 4(5a) - 4(14)$
$2a^{2} + 10a + 12 = 4a^{2} - 20a - 56$
$2a^{2} - 2a^{2} + 10a + 12 = 4a^{2} - 2a^{2} - 20a - 56$
$10a + 20a + 12 = 2a^{2} - 20a + 20a - 56$
$30a + 12 + 56= 2a^{2} - 56 + 56$
$\frac{30a + 68}{2} = \frac{2a^{2}}{2}$
$15a + 34 = a^{2}$
$\sqrt{15a + 34} = a$

6 0

3 years ago

18=5/6m help please!!!

blondinia [14]

18 = 5/6m

Divide 5/6 to both sides or multiply by its reciprocal, 6/5.

18 * 6/5 = m

108/5 = m

21.6 = m

7 0

3 years ago

One-third of a number b multiplied by -11 is more than 3 2

jarptica [38.1K]

$\frac{b}{3}\times(-11)>\frac{2}{3}$

5 0

1 year ago

Hannah deposited the same amount of money into her savings account each month after 5 months she had $2,550 into the savings acc

DiKsa [7]

Answer:

a = 250x + 1300

Step-by-step explanation:

We have pairs (5, 2550) and (8, 3300)

Find the rate of change:

(3300 - 2550)/(8 - 5) =
750/3 =
250

$250 is the amount added to savings account every month

Initial amount was:

2550 - 5*250 =
2550 - 1250 =
1300

Since the change is linear and we have y-intercept and slope, we can show the amount after x months as:

a = 250x + 1300

5 0

3 years ago

What is the value of x in the simplified expression?

never [62]

Answer:

Step-by-step explanation:

6 0

3 years ago